UK to bake in 27C Indian Summer heatwave as jet stream fires tropical weather at Britain

BRITAIN is just days away from an ‘Indian summer’ heatwave driven by hurricane remains jolting the jet stream allowing a swathe of tropical air to smother the country.

Temperatures are expected to start nudging 80F (27C) this weekend and into next week with glorious sunshine forecast across huge chunks of the UK. The summer revamp will be partly thanks to warm air pulled in by the remnants of Hurricane Dorian and Tropical Storm Gabrielle due to reach Britain this week. After getting caught up in the jet stream they will cause it to buckle allowing high pressure to build to help push the scorching blast.

The roasting combination will send temperatures rocketing into the high 20Cs meaning parts of the nation could be baking in an unseasonable 27C (81F) by next week.

It will follow a few days  of wet and windy weather with the remnants of Dorian and Gabrielle forecast to unleash strong winds and rain ahead of the weekend.

However it will leave in its wake a tropical mini-heatwave which could see Britain swelter in temperatures almost 10C higher than normal for the time of year.

Met Office meteorologist Bonnie Diamond said: “There is some good news because as the remnants of Gabrielle pull away from the UK, it will allow pressure to build in time for the weekend.

“This will allow for more sunny, settled conditions for most of the UK with temperatures into the low to mid-20Cs.

“Gabrielle will also bring warm air into the UK from the tropics, this combined with high pressure will bring some much warmer conditions to the UK this weekend.

“This is expected to last into next week.”

uk weather forecast map

UK weather: UK to bake in soaring temperatures as Indian Summer arrives - map shows Monday at 6pm (Image: NET WEATHER)

While it will be warm by day, with clear skies there will be some chilly nights to come with the mercury likely to drop into low single figures, she warned.

Ex-Gabrielle will also give the jet stream a nudge when she arrives to the UK at the end of this week driving high pressure to build in time for the weekend.

Central and southern areas are in for the best of the weather, according to Netweather meteorologist Terry Scholey.

He said: “Firstly will come the remains of ex-hurricane Dorian that'll pass to the north mid-week, with ex-Gabrielle following on bringing humid conditions to southern and central parts for a while on Thursday. 

“Sometimes these storms can be beneficial to us, as they interfere with the jet stream causing it to buckle.

“This'll encourage pressure to rise sharply after the passage of ex-Gabrielle, with the prospects for next weekend looking fine particularly for central and southern areas.”

Weather forecast for Sunday at 6am

Weather forecast for Sunday at 6am shows the jet stream buckling to send hot air hovering over the UK (Image: NET WEATHER)

Latest weather forecast maps show the jet stream will cover the UK and France

Latest weather forecast maps show the jet stream will cover the UK and France (Image: WX CHARTS)

Temperatures could push 80F this weekend and into the second half of September with a week of glorious sunshine on the way, according to some long-range experts.

Temperatures are about to rocket well above average for the start of autumn, according to Exacta Weather forecaster James Madden.

He said: “We have a spell of Indian summer type weather on the horizon for later this week.

“High pressure will build  and by the weekend is likely to see a spike in maximum temperatures to values in the mid to high-20Cs at the very least across southern areas.”

Even Scotland and the north could be basking in temperatures well above normal for the start of autumn, he said.

While the start of next week is not looking as hot, it will still be very warm for the time of year, he added.

UK weather forecast for Saturday

UK weather forecast for Saturday (Image: Alistair Grant)

He said: “Parts of Britain further north will also see maximum temperatures approaching the mid 20Cs at times.

“The better weather will linger on into much of next week, and although the sting will have been taken out of temperatures from the weekend, they will still be well above average for the time of the year.

“It will feel pleasantly warm in the sunshine for most.”

The fine weather will be driven in part by the jet stream which after being nudged into a northerly position by Gabrielle will allow warm air to flood in from the south.

The jet, a rapid channel of air which circulates the high atmosphere, will circle a region of high pressure allowing it to strengthen further encouraging the summer-like conditions.

Eleanor Bell, an IBM meteorologist with The Weather Company, said Britain’s weather will settle on Friday after a stormy few days ahead.

Clear skies and warmth are likely to hold out through next week with high pressure firmly in control, she added.

She said: “It will turn drier and more settled at the end of the week and into the weekend as high pressure builds, but there will be some chillier nights.

“High pressure is expected to remain in charge through next week with dry and settled conditions apart from the risk of showers in the far north-west.

“Temperatures will lift above normal for the time of year with maximum temps in the high teens across the north and low to mid 20Cs across the south.”